The Territorial dispute between Armenia and Azerbaijan over the Nagorno-Karabakh region has re-erupted with heavy clashes.
Armenia and Azerbaijan are part of Transcaucasia or South Caucasia.
They have been locked in a territorial dispute over Nagorno Karabakh region for almost four decades.
Nagorno-Karabakh region has 95% of the population as ethnically Armenian.
It is controlled by them but it is internationally recognised as part of Azerbaijan.
The dispute first started in 1988 and over the years it has caused massive human rights violations, a severe refugee crisis.
Following this, a provisional ceasefire agreement called the Bishkek Protocol was signed in 1994 by the representatives of Armenia, unrecognized Nagorno-Karabakh Republic but not effective.
The Bishkek Protocol was signed on May 5, 1994 in Bishkek, the capital of Kyrgyzstan.
Though Nagorno-Karabakh region is internationally recognised as a part of Azerbaijan, it remains disputed because it is controlled by ethnic Armenians.